| /* | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| /** | |
| * @file | |
| * Misc file utilities. | |
| */ | |
| /** | |
| * Read the file with name filename, and put its content in a newly | |
| * allocated buffer or map it with mmap() when available. | |
| * In case of success set *bufptr to the read or mmapped buffer, and | |
| * *size to the size in bytes of the buffer in *bufptr. | |
| * Unlike mmap this function succeeds with zero sized files, in this | |
| * case *bufptr will be set to NULL and *size will be set to 0. | |
| * The returned buffer must be released with av_file_unmap(). | |
| * | |
| * @param filename path to the file | |
| * @param[out] bufptr pointee is set to the mapped or allocated buffer | |
| * @param[out] size pointee is set to the size in bytes of the buffer | |
| * @param log_offset loglevel offset used for logging | |
| * @param log_ctx context used for logging | |
| * @return a non negative number in case of success, a negative value | |
| * corresponding to an AVERROR error code in case of failure | |
| */ | |
| av_warn_unused_result | |
| int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, | |
| int log_offset, void *log_ctx); | |
| /** | |
| * Unmap or free the buffer bufptr created by av_file_map(). | |
| * | |
| * @param bufptr the buffer previously created with av_file_map() | |
| * @param size size in bytes of bufptr, must be the same as returned | |
| * by av_file_map() | |
| */ | |
| void av_file_unmap(uint8_t *bufptr, size_t size); | |